High-quality Materials: The shower curtain hooks are made of high-quality metal, with durable electroplating on the surface, which has a long-lasting anti-rust effect and can be used for a long time, and the metal rings will not crack or break. Each curtain ring can hold 60 pounds, which can undoubtedly perfectly secure your shower curtain. Shower Curtain Ring Package Includes: Contains 24 black curtain rings, with an inner diameter of about 2 inches/50 mm, and the shower curtain rings with an inner diameter of 2 inches can be well compatible with most single or double shower rods. Hinged Opening Design: With a hinged opening design, it is more convenient to use, just pull open and squeeze to close. When you roll up the shower curtain to open or close the shower curtain, the metal buckle can be firmly closed to fix it on the shower curtain rod, and at the same time, these metal hooks will not be reversed like other hooks because of its shape. Both professionals and students can use it. Smooth Glide: These O-ring shower curtain rod hooks are rust-free and friction-free, can slide smoothly on the curtain rod without making too much noise. Add a finishing touch to your bathroom decor. Widely Used: Shower curtain rings with a hinged opening design fit most standard shower curtain rods. Shower curtain rings are also called binder rings, book rings, key rings, metal index card rings, clip rings, curtain rings, which can be used to file notes, scrapbooks, recipes, photos, sample books, contracts or documents.